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Nagarajan S, Li H, Woo EM, Chuang W, Tsai YW. Single Crystals Self‐Assembled to Sector‐Face Dendritic Aggregates by Synchrotron Microbeam X‐ray Analysis on Poly(ethylene succinate). MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Selvaraj Nagarajan
- Department of Chemical Engineering National Cheng Kung University Tainan 701 Taiwan
| | - Hsiao‐Hua Li
- Department of Chemical Engineering National Cheng Kung University Tainan 701 Taiwan
| | - Eamor M. Woo
- Department of Chemical Engineering National Cheng Kung University Tainan 701 Taiwan
| | - Wei‐Tsung Chuang
- National Synchrotron Radiation Research Center (NSRRC) 101 Hsin‐Ann Road Hsinchu 30076 Taiwan
| | - Yi Wei Tsai
- National Synchrotron Radiation Research Center (NSRRC) 101 Hsin‐Ann Road Hsinchu 30076 Taiwan
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Huang KY, Woo EM, Nagarajan S. Unique Periodic Rings Composed of Fractal-Growth Dendritic Branching in Poly(p-dioxanone). Polymers (Basel) 2022; 14:polym14040805. [PMID: 35215718 PMCID: PMC8963038 DOI: 10.3390/polym14040805] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 02/01/2023] Open
Abstract
Amorphous poly(p-vinyl phenol) (PVPh) was added into semicrystalline poly(p-dioxanone) (PPDO) to induce a uniquely novel dendritic/ringed morphology. Polarized-light optical, atomic-force and scanning electron microscopy (POM, AFM, and SEM) techniques were used to observe the crystal arrangement of a uniquely peculiar cactus-like dendritic PPDO spherulite, with periodic ring bands not continuingly circular such as those conventional types reported in the literature, but discrete and detached to self-assemble on each of the branches of the lobs. Correlations and responsible mechanisms for the formation of this peculiar banded-dendritic structure were analyzed. The periodic bands on the top surface and interior of each of the cactus-like lobs were discussed. The banded pattern was composed of feather-like lamellae in random fractals alternately varying their orientations from the radial direction to the tangential one. The tail ends of lamellae at the growth front spawned nucleation cites for new branches; in cycles, the feather-like lamellae self-divided into multiple branches following the Fibonacci sequence to fill the ever-expanding space with the increase of the radius. The branching fractals in the sequence and the periodic ring-banded assembly on each of the segregated lobs of cactus-like dendrites were the key characteristics leading to the formation of this unique dendritic/ringed PPDO spherulite.
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Affiliation(s)
| | - Eamor M. Woo
- Correspondence: ; Tel.: +886-6-275-7575 (ext. 62670)
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Grating assembly in periodic crystal aggregates of aliphatic polyesters with potential iridescence photonics. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-021-02856-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Tseng YL, Chuan KN, Woo EM. Unusual Ringed/Dendritic Sector Faces in Poly(butylene succinate) Crystallized with Isomeric Polymer. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06098] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ya-Ling Tseng
- Department of Chemical Engineering, National Cheng Kung University,University Road No.1, Tainan 70101, Taiwan
| | - Kai-Ning Chuan
- Department of Chemical Engineering, National Cheng Kung University,University Road No.1, Tainan 70101, Taiwan
| | - Eamor M. Woo
- Department of Chemical Engineering, National Cheng Kung University,University Road No.1, Tainan 70101, Taiwan
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Woo EM, Lugito G, Nagarajan S. Dendritic polymer spherulites: birefringence correlating with lamellae assembly and origins of superimposed ring bands. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1959-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Mandala YH, Woo EM, Ni'mah H, Nurkhamidah S. Surface-relief and interior lamellar assembly in Janus-face spherulites of Poly(butylene succinate) crystallized with Poly(ethylene oxide). POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lee LT, Wu MC, Yang CT, Li CW. Studies of inherent mixing and physical properties for green polymer blends comprising natural polyphenol and biodegradable polymer with aliphatic-aromatic backbone. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-1153-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Woo EM, Ni’mah H, Wang YH. Anisotropic Nucleation and Janus-Faced Crystals of Poly(l-lactic acid) Interacting with an Amorphous Diluent. Ind Eng Chem Res 2014. [DOI: 10.1021/ie501470a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eamor M. Woo
- Department
of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Hikmatun Ni’mah
- Department
of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan
- Department
of Chemical Engineering, Faculty of Industrial Technology, Sepuluh Nopember Institute of Technology, Kampus ITS Sukolilo, Surabaya, East Java 60111, Indonesia
| | - Yu-Hsiang Wang
- Department
of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan
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